Improvement in machines for drawing wire



&.- E. WOODS.

Machines for Drawing Wire.

Patented Nov. 25, i873.

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UNITED STATES PATENT OFFICE.

JOSEPH WOODS AND EDWIN IVOODS, OF HARRINGTON, GREAT BRITAIN.

IMPROVEMENT IN MACHINES FOR DRAWING WIRE.

Specification forming part of Letters Patent No. 144,940, dated November25,1873; application filed September 22, 1873.

To all whom it may concern.-

Be it known that we, J OSEPH Woons and EDWIN WooDs, of Warrington, inthe county of Lancaster, Great Britain, wire-drawers, have inventedcertain Improvements in Apparatus Employed in DrawingVVire, of which thefollowing is a specification:

In the accompanying drawing, Figure 1 represents a longitudinal view ofthe apparatus we employ; Fig. 2, a plan view, and Fig. 3 an end view inelevation.

The frame-work is shown at a, upon which there is fixed a series of drawplates or dies, 1) b b b of the usual construction. Between these are aseries of pulleys, c 0 0 mounted upon shafts d d 61 turning in bearingscarried by the frame-work, and provided at their lower ends withbevel-pinions e e 0 in gear with other pinions, f f f mounted upon ashaft, 9, which is provided at one end with the fast and loose pulleysh. At z is the ordinary disk or fusee which carries the wire j to bedrawn, and which, as shown, is free to rotate; but it may be driven, ifdesired. At It is the winding-on drum or block, carried by the shaft 1,which is driven by means of the bevel-pinions m n, the latter beingmounted on the main shaft 9.

On commencing operations, the end of the wire is led from the disk orfusee i, and drawn through the first plate or die I), after which it islapped a number ofsay, three-times around the pulley c; then through thesecond die or plate 11 and around the pulley c then through the thirdplate or die I) and around the pulley 0 after which it is drawn throughthe fourth plate or die I), and conducted to the block k, to which it issecured by the usual clamp 0.

We will for the present assume that this drawing through of the wire hasbeen effected by pinchers or other such apparatus used in any ordinarymanner but we will hereafter describe an apparatus which we havedesigned for that purpose.

The apertures in the plates or dies 1) b b b are of successivelydecreasing diameters, the last, 12 being of the proper size for bringingthe wire to the intended gage, and the numbers of teeth in the pinionscf, e f, 6 f and m a are so proportioned as to cause the pulleys c andblock is to rotate at an increased surface speed in proportion to theattenuation of the wire. Motion being now communicated to the main shaftg, the pulley 0 will draw the wire through the first plate or die b, thepulley through the second die or plate I), the pulley 0 through thethird die or plate b and the block it through the fourth plate or dieI), the numbers of teeth in the pinions being, as explained, in suchproportions as to enable the pulleys c c c and block is to take up theincreasing length of wire. Instead of the pul leys c c 0 being of thesame diameter, arranged to be driven at different speeds as regardstheir revolutions, they might be of diameters increasing toward theblock 7c, in which case the series of bevel-pinions might be furnishedwith equal numbers of teeth; further, instead of one pulley being usedfor each draw plate or die and the wire wound around such pulley, aseries of small pulleys (say, three) might be employed, the wire passingalternately under and over them, so as to provide sufficient surface forholding contact with the wire. The surface speeds of the pulleys andblock will be required to be varied in practice for obvious reasons,such as when drawing wire of iron, steel, or brass; but the adjustmentof the said pulleys and block, so as to provide a correct surfacevelocity, will be simple to practical wire-drawers.

We will now proceed to describe a method which may be adopted forpreparing a fresh coil of wire to be drawn, as above described.

At 12 is a shaft carried .by the frame-work, and provided with fast andloose pulleys q. Upon this shaft is a drum, 1, to which is attached oneend of a chain, 8, after which it passes over guide-pulleys t, and isattached at its other end to a pair of nippers t. When it is desired tolead the end of a fresh coil, a counterpart of the die I) is placed inthe position marked A, and the end of the said coil, (which is placed-inany required situation,) having been pointed as usual, is passed throughthe said die or plate. The driving strap now being on the loose pulley,the nip pers 10 may be drawn forward and caused to grasp the projectingend. The driving-strap is now placed on the fast pulley, by which meansthe chain 8 becomes wound upon the drum 0', and the nippers u are drawnforward. When a sufficient length of wire has been drawn forward toenable it to be coiled upon the pulley c, the plate or die A is placedfarther back, say at B, and a counterpart of b secured in its place,through which the wire is drawn, as above described, leaving in likemanner a length to be coiled upon the pulley e and so on through theseries; but, in practice, it will generally be found suiiicient toemploy the chain 8 for two dies only the wire being drawn through theothers by hand-gear.

The above-described operations are performed while the wire is beingdrawn, as above described, and when that operation is completed the diesor plates 1) b b are removed, and their counterparts, with the wiredrawn through them, substituted,the successive lengths above mentionedbeing coiled around the pulleys c c 0 We have above shown and describedfour plates or dies; but two, or more than four, may be employed.

We claim as our invention-- The series of two or more dies, withintervening drawing-pulleys moving at increasing surface speeds,substantially as and for the purpose hereinbefore set forth.

JOSEPH WOODS.

Witnesses: EDWIN WOODS.

WVM. TUDOR MARLEY, lllanchester. W. T. OHEETHAM, Manchester.

